Combined tension clip for fabric tensioning devices



Oct. 10, 1961 G. TREUTE ETAL COMBINED TENSION CLIP FOR FABRIC TENSIONINGDEVICES Filed June 10, 1957 2 Sheets-Sheet 1 INUEIVTO 7 4141; 04w )1 (3VW TQTEIR HTTORNEY Oct. 10, 1961 s. TREUTE ETAL 3,003,221

COMBINED TENSION CLIP FOR FABRIC TENSIONING DEVICES Filed June 10, 19572 Sheets-Sheet 2 15 12 13 1 IN V B ,annjl 4/4. 0(- A n lw ist cs Thepresent invention relates to a combined tension clip for fabrictensioning devices.

Combined tension clips of different structures are known for tensionchain's fonfabric tensioning devices in order to grip the longitudinalselvages of the fabric to be tensioned. For instance, the needle part isswingabiy connected with the clamping part in such tension clips and maybe moved out of the path of the fabric by a swinging movement. Thisarrangement has the drawback that the needle part'interferes with thedrying operation of the fabric during the use of the clamping part. Thesame disadvantage is found in other structures of combined tension clipswith needle parts which may be turned out or may swing into workingposition if needed.

Combined tension clips are also known, wherein the clamping part and theneedle part form a joined rigid tension body, which is swingable upon anaxle in such a manner that selectively the clamping part or the needlepart may be put into working position. These combined tension clips areknown having axles which are disposed perpendicularly to the directionof the fabric, as well as crosswise to its direction of movement. Theyhave the drawback that a large swinging angle is required which makesthe operation, the locking and the positioning of the clip body intoboth its working positions more dithcult and complicates theconstruction of the tension clip. Difiiculties have been alsoencountered with these combined tension clips to separate the latterfrom their guide parts, which are connected together to a joint-chain,for the purpose of. cleaning and repair. Since further the clamp partand the needle part are directed towards each other in these knowntension clips and, therefore, require a turning for 180, these tensionclips have also a larger construction height, which limits its use,because the drying nozzles cannot be brought close enough to the fabricpath.

It is, therefore, one object of the present invention to provide acombined tension clip for fabric tensioning devices, wherein the clipbody formed by the clamping part and the needle part is swingable uponan axis disposed parallel to the fabric path in both working positions.The needle carrier is arranged at about a right angle, but preferably atan angle of about 75 towards the clamping table, whereby a lowerconstruction of this tension clip is brought about and the dryingnozzles can be brought closer to and equally spaced at both sides of thefabric path. The swinging of the clip body into both Working positions,due to the smaller swinging angle of preferably 75 permits theadjustment and fixing of the clip body in the working positions in avery simple manner by means of a resilient tilting lever.

It is another object of the present invention to provide a combinedtension clip for fabric tensioning devices wherein the mounting of theswingable clip body and its locking in the two working positions bymeans of a resiliently mounted tilting lever brings about a novelfeature which resides in the mounting of the axle of the clip body inopen bearing-hooks of the guide member, which mounting permits ofremoval of the clip body without dismantling other clip parts from itsbearing and separation from its guide member. This expedient is ofparticular advantage for cleaning or repair of the clip body, sinceassert the guide members which are connected to a joint-chain tire; inno way interfered with by the removal of the clip The chain pivots aremaintained in position by a safety sheet which carries advantageously,as a further novel and inventive feature, the bearing for the springmember of the knee-lever. The safety sheet is retained by a springbiased locking slide, the nose end of which engages the guide member.

7 It is advisable to exert the tractive force of the tensioned fabric onthe connecting line of the tension point, through the center of the axleof the clip body and the center of the guide member, in order to arrangeaccordingly the clamping table and the needle carrier on the clip body.1

The novel manner of swinging the clip body upon an axis disposedparallel to the fabric path and in its direction of movement has alsothe advantage that upon use of the needle part the position of the clipbody is given by its abutment on its guide member and is safe againstthe pressure of the needle brushes. Upon use of the clamping part, incase of the same arrangement of said axis, the position of the clip bodyis likewise given by its abutment on its guide member.

With these and other objects in view which will become apparent in thefollowing detailed description, the present invention will be clearlyunderstood in connection with the accompanying drawings, in which:

FIGURE 1 is a side elevation of a tension clip with its clamping partshown in operative position;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation thereof;

FiG. 4 is a side elevation of a tension clip with its needle part inoperative position; and

FIG. 5 is a side elevation of the resilient knee lever with the safetysheet of the chain pivots and the locking slide with its nose end.

Referring now to the drawing, the present device comprises a rigid clipbody 1 which is equipped with a clamping table 2 having a flap 3 and theneedle table 4 with the needle carrier 5. The clip body 1 is mountedwith its axle 6 in an open hook 7 of the guide member 8 and has a reararm 9 which forms jointly with spring members 12. a knee joint, whichspring members 12 are movably supported by the bearing 17 of the safetysheets 10 of the 'chain pivots 11 and are mounted around a rod 12' whichabuts a bolt 12 of the rear arm 9. The safety sheet 10 of the chainpivots 11 has a spring biased locking slide 13 with a nose end 14 (FIG.5), which penetrates into the guide member 8 and which locks, thereby,the safety sheets 10 of the chain pivots 11 and, thereby, the chainpivots 11 against dislocation. Upon swinging of the clip body 1 in oneor the other of the operative positions, the knee joint is moved throughits dead point and pushes the clamping part and the needle part,respectively, into the operative positions. The effect of the springbiased knee joint 9 and 12 is limited by the abutments 15 and 16 of theguide member 8 and in this manner the clip body 1 is maintained in bothoperative positions by means of resilient locking means.

The application of the axle, disposed parallel to the fabric path and toits direction of movement, of the clip body 1 forming simultaneously theclamping part and the needle part is effective in equal manner, if thecombined tension clip deviates in details from the structure set forthabove. This relates for instance to the resilient locking of the clipbody in both operative positions and the mounting of its axle in openhooks of the guide member. The mounting of the axle in closed bearinghooks would merely interfere with the easy separation of the clip bodyfrom its guide member, without, however, eliminating the other describedadvantages of the combined tension clip constituting the subject matterof the present invention.

While we have disclosed one embodiment of the present invention, it isto be understood that this embodiment is given by example only and notin a limiting sense, the scope of the invention being determined by theobjects and the claims.

We claim:

1. A combined tension clip for fabric tensioning devices including aneedle carrier comprising a clip body, a clamping table and a clampingflap, said clamping table and said clamping flap being mounted on saidclip body, and a guide member having a hook, and an axle disposedparallel to the fabric path and to its direction of movement, said clipbody being swingable jointly with said clamping table and said clampingflap upon said axle on said guide member, so that selectively saidneedle carrier and said clamping table may be brought into operativeposition.

2. The combined tensioning clip for fabric tensioning devices, as setforth in claim 1 wherein said clip body includes a rear arm and amovable spring member supported by said guide member, said rear armtogether with said spring member forming a spring biased knee jointretaining said clip body in both said operative positions.

3. The combined tension clip, as set forth in claim 2,

4 wherein said guide member includes open hooks receiving said axle ofsaid clip body.

4. The combined tension clip, as set forth in claim 2, wherein saidguide member has abutments corresponding to the two operative positionsof said clip body, and said spring biased knee joint presses said clipbody towards said respective abutments. I

5. The combined tension clip, as set forth in claim 2, which includeschain pivots carrying a safety sheet, and the latter including a bearingsupporting saidspring members of said knee joint.

6. The combined tension clip, as set forth in claim 5, which includes alocking slide having a nose extension, said locking slide securing saidsafety sheet of said chain pivots and said nose extension projectinginto said guide member.

References Cited in the file of this patent UNITED STATES PATENTS FranceNov. 28, 1951

